Electrical cable insulated with an elastomeric flame retardant c

Details Electrical cable insulated with an elastomeric flame retardant c Electrical cable insulated with an elastomeric flame retardant c

1982-05-24

1984-06-26

Kendell, Lorraine T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

174120SR, 428384, 428389, 428390, 428391, B32B 2700, H01B 700

Patent

active

044566549

ABSTRACT:
Disclosed are crosslinked elastomeric compositions particularly suitable as a jacketing material for plenum cable. The compositions are based upon a mixture of an elastomeric component comprising an elastomeric copolymer of ethylene and methyl acrylate containing carboxylic crosslinking sites and from about 180 parts to about 350 parts by weight of at least one filler per 100 parts by weight of the elastomeric component to provide a limiting oxygen index of at least about 45 percent. Although the compositions may contain further additives such as processing aids, crosslinking agents, anti-oxidants, plasticizers and flame retardants, they are able to meet or exceed the flame spread and optical density requirements of Underwriters Laboratories UL 910 Tunnel Flame Test for electrical plenum cable jacketing material without the necessity of containing halogens.

REFERENCES:
patent: 2953551 (1960-09-01), White
patent: 3424631 (1969-01-01), Peacock
patent: 3553348 (1966-01-01), Betts
patent: 3802913 (1974-04-01), Mackenzie, Jr.
patent: 3922442 (1975-11-01), North et al.
patent: 4020214 (1977-04-01), Mackenzie, Jr.
patent: 4243579 (1981-01-01), Keogh
patent: 4260661 (1981-04-01), Walters
patent: 4349605 (1982-09-01), Biggs et al.
patent: 4370076 (1983-01-01), Sullivan et al.

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